If the bearing in a superior to swing form

If the bearing is superior to swing form will announce low purring sound striking scar also can produce noise, the noise will follow thin wall bearing speed bump and differences. If there is intermittent noise, through. If announced sharp hissing sound, make the sound and other behaved sound, often revealed performance bearing in adverse to swing. Choose the penetration of heavy load small grease work under high pressure in addition to the penetration of small, must have high oil film strength and extreme pressure properties. According to the environmental conditions choosing grease, calcium base grease is not easy to dissolve in water, suitable for dry and less moisture environment. Bearing the commonly used grease with sodium calcium base grease grease sodium calcium base grease lithium grease aluminium base grease and molybdenum disulfide grease, etc. In the bearing grease filling quantity, filled with to 1/2 - bearing internal space A third as appropriate. When high speed should be reduced to 1/3 of excess grease will lead to higher temperature rise. NMB bearing temperature, generally have a bearing on the surface of the outdoor temperature can be predicted, if using the oil hole can direct measurement of thin wall temperature of the bearing outer ring, is more appropriate. Generally, the temperature of the bearings with bearing operation began to slowly rise, 1 - After 2 hours to reach steady state. The normal temperature of bearing for machine heat capacity, heat dissipating capacity, rotational speed and load. If the appropriate lubrication, installation department, the bearing temperature will rise sharply, appear unusually high temperature, must stop at this moment, take the necessary precautions. Bearing is a kind of precision mechanical bearing components, bearing users deeply hope perfectly on the host bearing can be used for a predetermined period from damage and keep its dynamic performance, but reality sometimes is not very desirable, sudden bearing failure accident can cause great losses to the user. Through a lot of bearing failure analysis showed that bearing short-lived or premature loss of accuracy, have a plenty of due to improper material defect or manufacturing, but in a considerable extent is because there is no bearings used in strict accordance with the requirements for installation, maintenance, or bearing selection or actual load than thin wall bearing itself causes such as the rated load bearing abnormal damage. Bearing a cracked spalling is due to the bearing under the action of cyclic load, the contact surface fatigue damage is easy to occur, so in order to improve the service life of bearing, bearing steel must have a high contact fatigue strength. Hardness is one of the important quality of bearing quality, the contact fatigue strength, wear resistance, elastic limit has a direct impact. Thin wall bearing steel in the condition of using the hardness of general to achieve HRC61 ~ 65, bearing can obtain high contact fatigue strength and wear resistance. Cage is made of nylon 46, reduce the sliding friction between the ball and cage. Also, eliminates the direction of rotation of concave and convex shape, which reduces the mixing loss. In addition, by using can slow down the assembly of the shape of the stress, to ensure that the assembly performance. A single keep frame loss torque decreased 30 ~ 40%, thin wall bearing torque reduced 50 ~ 65% overall losses. The company to speculate that the prius will model of 10 and 15 fuel efficiency from past 35. 5 km/L up to 38. 0 km/L, improve fuel efficiency by about 1 ~ 2% is achieved by using this kind of bearing. Bearing parts in the process of production, after a lot of cold and hot working process, in order to meet the requirements of mass, high quality, thin wall bearing steel should have good processing performance. For example, the cold and hot forming properties, machinability, hardenability, etc.